Answer:
energy is equal to 1000 J
Explanation:
When the jumper is in the tent, he has a given height, this height gives him a gravitational potential energy, which forms his initial mechanical energy of 1000 J. After jumping, this energy is converted into elastic energy of the rope plus a remainder of potential energy gravitational, it does not reach the ground, but as the friction is negligible the total mechanical energy is conserved, therefore its energy is equal to 1000 J
This is a case of energy transformation, but the total value of mechanical energy does not change
Your weight would change but not your mass, the moon has less gravity so therefore you are going to be lighter :-)
Since each light year is approximately 9 trillion kilometres, 4.80 light years is 43.2 trillion kilometres, or 43,200,000,000,000,000 metres
Answer:
A High-to-Low
Explanation:
its like water running down a hill.
Answer:
aluminium > copper > steel (amount which get sag)
Explanation:
<u>Theory</u>
Linear expansivity (α) : The increase in length, per unit length per degree rise in temperature.
Therefore, α = Δl/Lθ
Δl = increase in length ( amount of sag in this case )
L = length of wire
θ = temperature change
We get, Δl = Lαθ
From that we get, amount of sag ∝ Linear expansivity (α)
Initial length of all three wires are the same.
The temperature change they subject also the same.
So the factor that changes the amount of sag is the coefficient of linear expansivity.
